Multiple Choice
What made supernova 1987A so useful to study?
A) It occurred after new telescopes, such as Hubble, could observe it very closely.
B) Its progenitor had been observed previously.
C) In the Large Magellanic Cloud, we already knew its distance.
D) We saw direct evidence of nickel to iron decay in its light curve.
E) All of the above are correct.
Correct Answer:

Verified
Correct Answer:
Verified
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